21010102332 has 48 divisors (see below), whose sum is σ = 49414240512. Its totient is φ = 6947724160.

The previous prime is 21010102313. The next prime is 21010102367. The reversal of 21010102332 is 23320101012.

It is a super-2 number, since 2×21010102332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034023 + ... + 1054145.

It is an arithmetic number, because the mean of its divisors is an integer number (1029463344).

Almost surely, 2^21010102332 is an apocalyptic number.

It is an amenable number.

21010102332 is an abundant number, since it is smaller than the sum of its proper divisors (28404138180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010102332 is a wasteful number, since it uses less digits than its factorization.

21010102332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20818 (or 20816 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21010102332 its reverse (23320101012), we get a palindrome (44330203344).

The spelling of 21010102332 in words is "twenty-one billion, ten million, one hundred two thousand, three hundred thirty-two".